CEMENT-1

Q.1

If 'P' is the standard consistency of cement the amount of water used in conducting the initial setting time test on cement is

0.65P
0.85P
0.6P
0.8P

Q.2

For complete hydration of cement the water cement ratio needed is

Less than 0.25
more than 0.25 but less than 0.35
more than 0.35 but less than 0.45
more than 0.45 but less than 0.60

Q.3

While concreting in cold weather where frosting is also likely, one uses

high quality portland cement with minimum additives
high alumina cement with calcium chloride additives
portland cement together with calcium chloride additives
a mixture of high alumina cement and portland cement

Q.4

Gypsum is used as an admixture in cement grouts for

accelerating the setting time
retarding the setting time
increasing the plasticity
reducing the grout shrinkage

Q.5

Match list-1 and list-2 and select the correct answer using the codes given below the lists

List-1
a. Fineness of cement
b.Setting time
c.Soundness
d.Workability
List-2
1.Le-chatelier apparatus
2.Vicat's apparatus
3.Air permeability apparatus
4.slump cone
LIST-1 ABCD
LIST-2

1234
3142
3214
1432

Q.6

Assertion(A):Pozzolana is added to cement to increase early strength

Reason (R): It offers greater resistance to the attack of agressive waters

both A and R are true and R is the correct explanation of A
both A and R are true and R is not a correct explanation of A
A is true but R is false
A is false but R is true

Q.7

Match List-I(Type of cement) with List-II (Characteristics) and select the correct answer using the codes given below the lists

List-I
A. Air entraining portland cement
B.Low heat portland cement
C. Hydrophobic portland cement
D. Rapid hardening portland cement
List-II
1. Suitable for very large structures
2. Unsuitable for very large masses of concrete.
3. Greater resistance to frost attack
4.Safe storage under unfavourable conditions of humidity.
List-I ABCD
List-II

4213
3412
3142
4123

Q.8

Which of the following pairs in respect of ordinary portland cement (OPC) are correctly matched.

1. Initial setting time ---------------30 minutes
2.Final setting time------------------10 hours
3.Normal consistency--------------10%
Select the correct answer using the codes given below

1, 2 and 3
2 and 3
1 and 2
1 and 3

Q.9

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Q.10

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